Supplementary Material for: A Feasibility Cluster Randomised Control Trial of a Person-centred Fluid Adherence Intervention For Adults Receiving Haemodialysis

Introduction: Adherence to fluid restriction is an essential component of haemodialysis (HD) self-management, although educational interventions are rarely adjusted to meet a person’s health literacy abilities. This study aimed to evaluate the feasibility of a person-centred intervention to improve fluid adherence in adults receiving HD.
Methods: A pragmatic, clustered, randomised control feasibility trial involved adults receiving HD for at least 3 months. The control group received standard care while the intervention group received standard care plus a 12-week self-management program that included 4 face-to-face individual teach-back sessions. Randomisation was based on HD treatment shifts. Primary outcomes were acceptability and feasibility (recruitment, retention and completion rates) and secondary outcomes included patient-reported measures (knowledge, self-efficacy, health literacy, health-related quality of life [HRQoL]) and clinical outcomes (interdialytic weight gain [IDWG] and blood pressure [BP]).
Results: The recruitment rate was 53.2% (50/94 screened) with participants (mean age 51 years, SD = 12.52) randomly allocated to intervention (n = 25) and control groups (n = 25). Overall, patient-reported outcome completion rates at baseline and 12 weeks were 88% and 90% respectively. Retention rates for the intervention and control groups were 96% and 92% respectively. There were no between group differences at baseline. At 12 weeks, significant improvements were found in the intervention group for knowledge, self-efficacy, health literacy, self-care index and IDWG, but not HRQoL. The study found mixed results for BP.
Conclusion: This intervention was feasible and acceptable to deliver in the clinical setting during HD treatment and has the potential to improve health outcomes for adults on HD.